1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03ff68966fedc5968b4f319f516363bc439a8d6c2524ccf91d15860c4fc8a68. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22ee9aeb-d69b-4bf5-b034-120254c484ec.json and https://artists.proofprofile.net/proofs/artist/22ee9aeb-d69b-4bf5-b034-120254c484ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48041b5aecd77ce28d0185d8a52f25e4bed4fd8a1760b9711eb5ec6cc4eedf11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4585d2240c524ee7db6db6a2b92671b66ab36472bfd7d71df1907899af8f958. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b2c3bdf5f5a32c00962481c3466cbd1536adb3b285e0c0463eacdf9717e1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aae567a4c6a8540354460f2bb67072d35108c7a317740418b7dac3734f2664. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a6185735dc3984f017b5fddfafec4467d9bdf74a36b9a2464989fe5c4a4855. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e3850db3d5eeb8350f6bfd3fd3c6525499bba5e3eb0d81bf58101c8c78368f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0567f35031adf4e12fded32f2a54456acabf4189f3ec40cc54a2b58e5ed12477. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05d1df119268c5e202d7a98147f01fbf60582267b996a60c99618da67710e72. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ab2b382d515d8e68a3f9eddc167e29059fcc5d9bc8d5f977ae50e820a8f67. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc5e905123da8c48ca6ec2920b87462da079cdd8a3eda2970e267bff6cc8197. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329414.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccfb8322f83c3802dd6c14ad73af9ab67a0d89fed2c28ba404c1a94ce026a18. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cffe1c2a40660ea56e457094ebdf42b44070e89dd42c32220128da1abd95ac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84a232ab130c3e6d91c3d7584952afcecaa6aaeda7a3a434c06a6309e3873e5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e54cc396b63579f5c174aa8ac8e258bf22599da173565e5aa1f071899577bf. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c70a3fce0212a99f327be9986f0476a62e01c075de7fec3e2c6ebd533103ec. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74530fc0c34ffe54c7e627a51536a0f2e84bb451cc00ec777c3eed431dd12bf. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V1329424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8807fa796ecabad54dfa9c7a485f36da7b26b8fa9997c2b4fd236c283af70bfc. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06015080323e52c580903a7c45484f07ec27b6d058f23b1b0c5b4717590d6ef3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91af1d55edd748c2c8c817dde96a03efd7ff716e260a10ac05a3d26cb6050244. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44658b7d89ab5347f1d5b1978f81d7bc3cf38f9fa6edd3b5a464ab9399375cc1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f4f22ab426db38c195e97b0e27c63ab3226d4b03d603b2287d76a0aa251872. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b671f86814516ff7ed26c847e40a4f91f8da369bfcae1dbb7049e6af02643e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91146d11428ce0a02d6e160b59124704487a92b94baff2eeadb9c91f4c538c55. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e73bdb1f76872316375c6759280892aa41d61c849faea0e515b9de71ae9b96. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726ea945214a6fe5938befbdfa74e21241581135798499da99172fb8329d5fbd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66506ed879b5a18deb69221ef03bfa5d059725e9e1b9f7e7f64f2efd98ec26. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740aeec0c9b7bc032a9f04fc66156c253729bfe41edcfc315a4ac30aa14f8ba1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee1d067daf3eea60c47414e652a7fc5711d07fe35916c19fa9e5cd2268a5cec. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500013.
Beat & I A Já Und Ich (feat. Masta Ace & Dendemann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f74d2100cd892fb59ddf2ff73fde09a4b28b1badbae78df61470dcb69bbf98f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc557904cb26f6428e121106b222a126204102cdee37eca353e664333fb463e5a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500026.